<template>
  <el-dialog
    :title="title"
    :visible.sync="visible"
    width="600px"
    :before-close="handleClose"
  >
    <el-form
      ref="formData"
      :rules="rules"
      :model="formData"
      label-width="100px"
      label-postion="right"
      style="width: 400px"
      status-icon
    >
      <el-form-item label="广告图片:" prop="imageUrl">
        <el-upload
          class="avatar-uploader"
          action=""
          :show-file-list="false"
          :http-request="uploadMainImg"
        >
          <img
            v-if="formData.imageUrl"
            :src="formData.imageUrl"
            class="avatar"
          />
          <i v-else class="el-icon-plus avatar-uploader-icon"></i>
        </el-upload>
      </el-form-item>

      <el-form-item label="广告标题:" prop="title">
        <el-input v-model="formData.title" />
      </el-form-item>
      <el-form-item label="广告链接:" prop="advertUrl">
        <el-input v-model="formData.advertUrl" />
      </el-form-item>
      <el-form-item label="跳转方式:" prop="advertTarget">
        <el-select
          v-model="formData.advertTarget"
          clearable
          style="width: 185px"
        >
          <el-option label="新窗口打开" value="_blank"></el-option>
          <el-option label="当前窗口打开" value="_self"></el-option>
        </el-select>
      </el-form-item>

      <el-form-item label="状态:" prop="status">
        <el-radio-group v-model="formData.status">
          <el-radio :label="1">正常</el-radio>
          <el-radio :label="0">禁用</el-radio>
        </el-radio-group>
      </el-form-item>
      <el-form-item label="广告位置:" prop="position">
        <el-input-number
          v-model="formData.position"
          :min="1"
          :max="1000"
          label="描述文字"
          style="width: 300px"
        >
        </el-input-number>
      </el-form-item>
      <el-form-item label="排序:" prop="sort">
        <el-input-number
          v-model="formData.sort"
          :min="1"
          :max="1000"
          label="描述文字"
          style="width: 300px"
        >
        </el-input-number>
      </el-form-item>

      <el-form-item>
        <el-button type="primary" @click="submitForm('formData')" size="mini"
          >确定</el-button
        >
        <el-button size="mini" @click="handleClose">取消</el-button>
      </el-form-item>
    </el-form>
  </el-dialog>
</template>

<script>
import commonApi from "@/api/common.js";
import api from "@/api/advert.js";
export default {
  props: {
    title: {
      //弹窗的标题
      type: String,
      default: "",
    },
    visible: {
      //弹出窗口
      type: Boolean,
      default: false,
    },
    formData: {
      //提交表单数据
      type: Object,
      default: {},
    },
    remoteClose: Function, //用于关闭窗口
    oldImageUrl: String, //编辑时查询出来的那张图片
  },
  data() {
    return {
      rules: {
        imageUrl: [{ required: true, message: "请上传广告", trigger: "blur" }],
        title: [{ required: true, message: "请输入广告标题", trigger: "blur" }],
        advertUrl: [
          { required: true, message: "请输入广告链接", trigger: "blur" },
        ],
        advertTarget: [
          { required: true, message: "请选择打开方式", trigger: "change" },
        ],
        status: [{ required: true, message: "请选择状态", trigger: "change" }],
        position: [{ required: true, message: "请选择位置", trigger: "blur" }],
        sort: [{ required: true, message: "请选择排序号", trigger: "blur" }],
      },
    };
  },

  methods: {
    //   关闭窗口
    handleClose() {
      //将表单清空
      this.$refs["formData"].resetFields();
      //触发关闭页面
      this.remoteClose();
    },
    //   提交表单数据
    submitForm(formname) {
      this.$refs[formname].validate((valid) => {
        if (valid) {
          this.submitData();
        } else {
          return false;
        }
      });
    },
    async submitData() {
      let response = null;
      if (this.formData.id) {
        response = await api.update(this.formData);
      } else {
        response = await api.add(this.formData);
      }

      if (response.code === 20000) {
        this.$message({
          message: "保存成功",
          type: "success",
        });
        // 关闭窗口
        this.handleClose();
      } else {
        this.$message({
          message: "保存失败",
          type: "error",
        });
      }
    },
    // 上传图片，file是上传的图片对象
    uploadMainImg(file) {
      const data = new FormData();
      data.append("file", file.file);
      commonApi
        .uploadImg(data)
        .then((res) => {
          //   删除之前的图片
          this.deleteImg();
          //   回显
          this.formData.imageUrl = res.data;
        })
        .catch((err) => {
          this.$message.error("上传失败");
        });
    },
    deleteImg() {
      if (
        this.formData.imageUrl &&
        this.formData.imageUrl !== this.oldImageUrl
      ) {
        commonApi.deleteImg(this.formData.imageUrl);
      }
    },
  },
};
</script>

<style>
.avatar-uploader .el-upload {
  border: 1px dashed #d9d9d9;
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.avatar-uploader .el-upload:hover {
  border-color: #409eff;
}
.avatar-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 178px;
  height: 178px;
  line-height: 178px;
  text-align: center;
}
.avatar {
  width: 178px;
  height: 178px;
  display: block;
}
</style>